The answer of this expression is - 4 1/6
Answer:
D.64
Step-by-step explanation:
A linear line equals up to 180
A+D=180
Substitute 116 for A
116+D=180
Subtract 116 from both sides
D=64
A reflection across the x-axis won't change the measure of an angle
The answer is 64.
Answer:
-5
Step-by-step explanation:
Answer:
No
Step-by-step explanation:
-2/5 is not equal to 2/5 because it is negative and 2/5 is positive. This actually means that -2/5 is the opposite of 2/5.
Consider the triangle with sides a=1.6, b=2.3 and c=1.2 feet. You can use cosine theorem twice to find two unknown angles:
1.

Then you can conclude that ∠B is obtuse (because
) and m∠B=110°.
2.
.
Then you can conclude that ∠C is acute (because
) and m∠C=29°.
3. m∠A+m∠B+m∠C=180°, then m∠A=180°-110°-29°=41°.
Answer: m∠A=41° (∠A is opposite to the side a=1.6), m∠B=110° (∠B is opposite to the side b=2.3) and m∠C=29° (∠C is opposite to the side c=1.2)